English: The Danube is after the Wolga the second longest river in Europe. Her length is 2.845 km measured from the confluence of the spring rivers Brigach, Breg and Donauquelle (Spring of Danube) in Donaueschingen. Beginning at the Breg spring in Furtwangen, the length of the river measures 2.888 km. After Germany and Austria, the river crosses eight other European states and ends in the Black Sea at the Danube estuary.